Flip through a magazine, turn on the TV, or browse around online, and it quickly becomes clear: vegetarian eating is on the rise. But just who are vegetarians? How do they make the transition? And what really drives them to take the meat off their plates? Vegetarians differ from omnivores not just in their eating habits but also in their psychology,... more...

Turns out much of the advice we’ve been given about how to make the world a better place turns out to be dead wrong. Donating to certain charities will do thousands of times more good that donating to others. Non-profits that choose to carry out one program instead of another will be hundreds of times less successful than they could be, regardless... more...